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Priority to JP6687971UpriorityCriticalpatent/JPS5116492Y2/ja
Priority to US3766943Dprioritypatent/US3766943A/en
Priority to GB3565472Aprioritypatent/GB1364749A/en
Publication of JPS4825317UpublicationCriticalpatent/JPS4825317U/ja
Application grantedgrantedCritical
Publication of JPS5116492Y2publicationCriticalpatent/JPS5116492Y2/ja